Starter motor and generator repair tool



Dec. 30, 1952 M. T. HENRY 2,623,556

STARTER MOTOR AND GENERATOR REPAIR TOOL Filed June 1, 1949 2 SI'IE'ETSSHEET l g 4 I4 13 36' I Fig. 2 I4 5: F lg. 5

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STARTER MOTOR AND GENERATOR REPAIR TOOL 5116a June 1, 1949 2SHEETS-SHEET 2 I Fig.3. 4:4

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Inventor Mark T. Henry O Patented Dec. 30, 1952 STARTER MOTORANDOGENERATOR REPAIR TO L Mark '1. Henry, Marshall, Tex.

Application June 1, 1949, Serial No. 96,566

(01. Pi l-32) 2 Claims.

The present invention relates to new and useful improvements in toolsfor the assembly and repair of starter motors and generators of a typeused with motor vehicles.

An important object of the invention is to provide a frame having acradle in which the housing of a starter motor or generator is firmlyheld and providing a feed screw for a screwdriver carried by the frameto firmly hold the screwdriver in engagement with the field pole screwsof the starter motor or generator while removing or replacing the same.

Another object of the invention is to provide a spreader to hold theusual pole pieces for the field coils of the starter motor or generatorwhile the field pole screws are being removed or replaced, and forholding the field coils and pole pieces in assembled relation whileassembling or repairing the starter motor or generator.

A still further object is to provide a tool of this character of simpleand practical construction, which is efficient and reliable inoperation, strong and durable, relatively inexpensive to manufacture andotherwise well adapted for the purposes for which the same is intended.

Other objects and advantages reside in the details of construction andoperation as more fully hereinafter described and claimed, referencebeing had to the accompanying drawings forming part hereof, wherein likenumerals refer to like parts throughout, and in which:

Figure 1 is a perspective view;

Figure 2 is a transverse sectional view taken on the line 22 or Figure1;

Figure 3 is a longitudinal sectional view taken on the line 3-3 ofFigure 2;

Figure 4 is a horizontal sectional view taken on the line 4-4 of Figure3; and

Figure 5 is a perspective view of the spreader.

Referring now to the drawings in detail wherein, for the purpose ofillustration, I have disclosed a preferred embodiment of the invention,the numeral 5 designates a substantially squareshaped frame positionedupright and 6 is a substantially U-shaped frame positionedhorizonhousing I2 of a starter motor or generator is seated with one endof the housing projecting rearwardly over upper leg I of rear frame 6.

An adapter screw I3 is threaded into the top of frame 5 and is formedwith a wrench engaging head M. The screw 13 is internally threaded toreceive a feed screw l5 having a wrench engaging upper end It and ascrewdriver bit I! suitably secured at its lower end to engage theuppermost field pole screw 18 employed for securing the field polepieces I9 in the housing l2 and which secure the field coils 20 inassembled position in the housing.

The upper leg 1 of rear frame 6 is formed with a longitudinal slot 2|for slidably receiving and supporting in an upright position a pair ofupper and lower spreader plates 22 and 23 positioned in overlappingrelation with respect to each other and held in a contracted position bycoil springs 24 having their ends engaged in notches 25 at the upper andlower edges of plates 22 and 23, as shown in Figure 5 of the drawings.

The upper edge of plate 22 is provided with an arm 26 and the lower edgeof plate 23 is provided with a similar arm 2'! provided with alignedinternally threaded collars 2B and 29 and in which upper and loweroppositely threaded screws 3|] and 3| are engaged.

The screws 30 and 3| are positioned vertically between collars 28 and 29and the adjacent ends of the screws are formed with square-shaped wrenchengaging portions 32, one of said wrench engaging portions being formedwith a guide pin 33 slidably engaged in a recess 34 in the other of saidwrench engaging portions 32 to rigidly connect the adjacent ends ofscrews 30 and 3| during movement thereof relative to each other.

In the operation of the device, the housing 12 of a starter motor orgenerator is seated on the cradle or seat H at the bottom of frame 5 andthe spreader plates 22 and 23 are positioned in slot 2l and with theupper and lower collars 28 and 29 bearing respectively against a pair ofupper and lower pole pieces IS] in the housing [2.

A ratchet wrench 35 is applied to wrench engaging portions 32 of screws30 and 3| and the screws turned to force collars 28 and 29 tightlyagainst the pole pieces I9 in the manner of a screw jack.

Screw i5 is then turned by a wrench 36 to remove screw I8 by screwdriverbit I! at the lower end of screw l5.

The several screws i8 for holding the pole pieces l9 may thus be removedby turning housing l2 on seat II to bring the screws in position forengagement by screwdriver bit I? and the field coils 2i! removed andrepaired or replaced.

The collars 28 and 29 of spreader plates 22 and 23 likewise hold thepole pieces H) in position while assemblingthe field coils.

In view of the foregoing description taken in conjunction with theaccompanying drawings, it is believed that a clear understanding of thedevice will be quite apparent to those skilled in this art. A moredetailed description is accordingly deemed unnecessary.

It is to be understood, however, that even though there is herein shownand described a preferred embodiment of the invention, the same issusceptible to certain changes fully comprehended by the spirit of theinvention as herein described and within the scope of the appendedclaims.

Having described claimed as new is:

1. A repair tool of the class described comprising a frame having a worksupporting seat and also including a slotted part overlying the seat,extensible means adapted for placing internally of work supported on theseat and including a pair of vertically extensible plates held in anupright position in said slotted part, spring means connecting theplates to each other, and oppositely threaded screw means carried by theplates to spread the plates apart internally of the work.

2. A repair tool of the class described comprisingan upstanding framehaving a work supportthe invention, what is ing seat at its bottomposition, a second frame extending rearwardly from said upstanding frameand including an upper horizontal arm having a slot in its free end andadapted for placing internally in work supported on said seat, anexpander including a pair of plates supported in confronting upstandingposition in said slot, spring means contracting the plates, upper andlower internally threaded collars carried by the plates, oppositelythreaded pressure screws threaded in the collars to oppositely move theplates into clamping engagement with an internal part of the work tohold the same in assembled position in the work, and means carried bysaid upstanding frame engaging and holding the work on the seat.

MARK T. HENRY.

REFERENCES CITED The following references are of record in the file ofthis patent:

UNITED STATES PATENTS Number Name Date 139,157 Jackson May 20, 1873866,547 Wilkinson Sept. 17, 1907 1,217,910 Brown Mar. 6, 1917 1,716,365Baker June 11,1929 1,829,557 Ewing- .c Oct. 27, 1931 1,842,830 HolmesJan. 26, 1932 2,429,345 Davis Oct. 21, 1947

